In order to computing the diagrams shown in Fig. REF , we need the effective Lagrangian densities for the relevant interaction
vertices. As mentioned in above, the \(P_{cs}(4459)\)  resonance is identified as \(S\) -wave \(\Xi _c\bar{D}^{*}\)  molecule. The molecular
structure of the \(P_{cs}(4459)\)  baryon with \(J^P=1/2^{-}\)  is described by the following Lagrangian [1]}
\(\mathcal {L}_{P_{c s} \Xi _{c} \bar{D}^{*}}&=g_{p_{c s}} \bar{P}_{c s}(x) \gamma ^{\mu }\gamma ^{5}\nonumber \\&\times \int dy\phi (y^2)\sum {}C_i\Xi _{c}(x+\omega _{\bar{D}^{*}}y)\bar{D}^{*} _{\mu }(x-\omega _{\Xi _c}y),\) 
